/*
 * Copyright 2012-2021 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.boot.docs.productionreadyfeatures.metrics;

// tag::code[]
import io.micrometer.core.instrument.Gauge;
import io.micrometer.core.instrument.binder.MeterBinder;

import org.springframework.context.annotation.Bean;

public class SampleMeterBinderConfiguration {

	@Bean
	MeterBinder queueSize(Queue queue) {
		return (registry) -> Gauge.builder("queueSize", queue::size).register(registry);
	}

}
// end::code[]

class Queue {

	int size() {
		return 5;
	}

}
